Short Answer TypeIn which phase of the cell cycle does replication occur in Eukaryotes? What would happen if cell-division is not followed after DNA replication?
Explain Darwinian theory of evolution with the help of one suitable example. State the two key concept of the theory.
Study the graph given below and answer the questions that follow:
(i) Write the status of food and space in the curves (a) and (b).
(ii) In the absence of predators, which one of the two curves would appropriately depict the prey population?
(iii) Time has been shown on X-axis and there is a parallel dotted line above it. Give the significance of this dotted line.
State the relation between gross and net primary productivity.
The relation between the gross and net primary productivity can be shown as:
(a) Gross primary productivity is the rate of production of organic matter during photosynthesis.
(b)Net primary productivity is the available biomass for the consumption to heterotrophs (herbivores or decomposers).
Gross primary productivity minus the respiratory losses is the net primary productivity
NPP = GPP-R, where,
NPP = Net primary productivity
GPP = Gross primary productivity
R = Respiration
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
How is 'oogenesis' markedly different from 'spermatogenesis' with respect to the growth till puberty in the humans?
Draw a sectional view of human ovary and label the different follicular stages, ovum and Corpus luteum.
Mention any three characteristics of Neanderthal man that lived in near east and central Asia.
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